United States Department of Transportation
i
Evaluation, Comparison, and Improvement Recommendations for Caltrans Financial Programming Processes and Tools [Research Brief]
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2023-01-01
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[PDF-161.16 KB]
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Abstract:Part-time shoulder use during peak hour traffic conditions is an alternative to expensive permanent freeway capacity expansions. Caltrans District 5 is pursuing this strategy on US 101 corridor as part of the planned Five Cities Multimodal Transportation Network Enhancement Project in San Luis Obispo County, California. The project involves piloting the part-time use of the left shoulder, which is less common than the use of the right shoulder, and would be the first such project in the state. Future use of this strategy in the state depends on the outcomes of this pilot project. This research established frameworks for evaluating potential design alternatives for operation and safety and to train the TMC (Transportation Management Center) personnel to operate the left shoulder as a part-time lane.
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